MP7720DS-LF - 20W Mono Class-D Audio Amplifier | MPS
MPN： MP7720DS-LF ✓ 啟用中MP7720DS-LF 概覽
A Class-D audio amplifier is a switching power amplifier that delivers audio through rapidly switched output transistors. Within the amplifier hierarchy, the MP7720 is an integrated audio power amplifier and power-management IC rather than a low-power signal amplifier. Its efficiency-oriented Class-D topology can deliver substantial audio output while reducing heat relative to a linear amplifier when operated within the manufacturer’s specified electrical and thermal limits.
The MP7720’s primary verified specifications are 20W output power, a 9.5V to 24V supply range, and one mono channel. Its integrated 180mΩ power MOSFETs reduce the need for external output transistors. Additional functions include startup and shutdown pop elimination, short-circuit protection, and mute or standby operation. These features make the device relevant to mono speakers, compact consumer audio products, powered speakers, sound bars, and auxiliary audio modules.
Technically, the single-ended output topology supports a compact implementation without requiring a full-bridge output stage. Short-circuit protection improves resilience when a speaker wiring fault occurs, while mute and standby provide external control for quiet power management. The manufacturer identifies the MP7720 as a second-generation fully integrated audio amplifier, emphasizing its integration of the power stage and control functions.
Typical applications include powered speakers, compact stereo systems using one channel per module, sound bars, portable or dock-based speakers, and industrial audio products with a single speaker. The 24V upper supply limit is a key design constraint; higher-voltage amplifier modules are not automatically suitable replacements. Speaker impedance, output-filter selection, supply decoupling, thermal performance, and control sequencing must be checked against the manufacturer datasheet.
For PCB design, keep input, supply, output, and ground paths compact and route power-current loops with low resistance. The switching output requires an appropriate EMI-conscious layout and the prescribed LC output filtering. Verify thermal rise at worst-case supply, load, and ambient conditions because a stated 20W capability does not remove board-level heat dissipation requirements.
This page consolidates verified manufacturer and distributor information, pricing availability, replacement evidence, and practical implementation guidance for engineers evaluating the MP7720DS-LF.
直接替換替代品，適用於 MP7720DS-LF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MP7720DS-LF （相同外形與佔位） — 差異在於 Channel Configuration, Lead-Free Status, Output Power, Package, Product Type.
此產品無可直接替換的替代品。
申請替代品MP7720DS-LF 最大額定值與電氣特性
| Amplifier Type | Class-D audio power amplifier |
| Channel Configuration | 1 channel (mono) |
| Output Power | 20 W |
| 供應電壓 | 9.5 V to 24 V |
| Output Topology | Single-ended |
| Power MOSFET On-Resistance | 180 mΩ |
| 工作溫度 | -40°C to +85°C |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
| Startup and Shutdown | Pop elimination |
| Fault Protection | Short-circuit protection |
| Control Function | Mute or standby |
| Power Stage Integration | Integrated power MOSFETs |
| Product Generation | Second-generation fully integrated audio amplifier |
| RoHS 狀態 | Compliant |
| Lead-Free Status | Lead-free plastic package |
| DigiKey Availability Statement | Buy now, ships today |
MP7720DS-LF 8-pin soic 腳位配置指南
MP7720DS-LF（8-pin soic 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MP7720DS-LF.
請參閱 資料表 以查看完整腳位配置。
典型應用
MP7720DS-LF 適用於 6 應用s: Powered Mono Speaker, Compact Stereo Audio System, Sound Bar Speaker Module, USB or Docking Speaker, Industrial Audio Annunciator, Portable Audio Dock.
Powered Mono Speaker
The MP7720DS-LF fits a powered speaker because it is a verified 20W, mono, single-ended Class-D amplifier with an 8-SOIC package and a 9.5V-to-24V supply range. Place the integrated amplifier stage close to the speaker terminals and use the manufacturer-prescribed output filtering to keep switching energy out of the acoustic path. The 180mΩ power MOSFET integration reduces external power-stage count. Because the supplied data does not state a verified speaker impedance, engineers must confirm that value and the associated output-power conditions in the full datasheet before selecting the PCB and speaker.
推薦
Compact Stereo Audio System
A compact stereo system can use one MP7720DS-LF channel per speaker, using the device’s verified mono, 20W, single-ended output architecture for each side. The 8-SOIC format supports a relatively small mixed-signal layout, while integrated short-circuit protection and mute or standby control simplify system behavior. Supply noise, channel-to-channel gain matching, thermal rise, and EMI filtering must be evaluated together. The supplied material does not verify input gain, channel mismatch, THD+N, or thermal resistance, so those values should be taken from the manufacturer test conditions rather than assumed.
推薦
Sound Bar Speaker Module
The MP7720DS-LF is applicable to a sound-bar speaker module requiring a mono 20W Class-D output stage with control and protection integration. Its single-ended topology, 9.5V-to-24V supply range, startup and shutdown pop elimination, mute or standby, and short-circuit protection are directly relevant to consumer audio systems that need controlled startup and fault handling. Place the switching output and LC filter away from sensitive input and control traces, then verify EMI behavior in the finished enclosure. The full datasheet is required for filter selection, output impedance, and thermal derating.
推薦
USB or Docking Speaker
A USB or docking speaker can benefit from the MP7720DS-LF when its system supply remains inside the verified 9.5V-to-24V range. The integrated power stage, mute or standby function, and pop elimination help simplify enclosure designs where predictable startup and shutdown are important. The amplifier must be paired with an appropriate analog audio source and output filter, and its switching supply and output return paths should be routed to minimize audible or radiated interference. The supplied data does not verify battery-current behavior or low-voltage operation, so a battery-powered design should not assume regulation below 9.5V.
推薦
Industrial Audio Annunciator
The MP7720DS-LF can serve as the power-amplifier stage in an industrial audio annunciator when a single 20W speaker output is sufficient. Its short-circuit protection and mute or standby controls are useful in equipment where an external fault or shutdown request may occur, while the -40°C to +85°C operating range covers many industrial environments. EMI control is especially important when the speaker wiring is long or exits the enclosure. The verified sources do not provide the required load impedance, protection timing, or thermal derating, so those items must be checked before qualification.
推薦
Portable Audio Dock
The MP7720DS-LF is a candidate for a portable audio dock when an external adapter can provide the required 9.5V-to-24V amplifier supply. Its integrated 180mΩ power MOSFETs reduce board-level output-stage complexity, and startup or shutdown pop elimination supports cleaner docking transitions. The designer must budget regulator headroom, output-filter loss, speaker loading, copper area, and thermal rise; the verified 20W figure alone does not guarantee uninterrupted 20W operation in a small enclosure. Confirm absolute maximum voltage and recommended operating conditions in the official datasheet before layout release.
推薦
推薦產品摘要
工程參考資料，適用於 MP7720DS-LF — 比較、設計指引及合規資訊。
選型指南
主要差異化特點
- Integrated 20W mono Class-D power stage (對比MAX98357AETE+T)
- Built-in protection and control functions (對比MAX98090AEWJ+T)
- Wide verified supply range for fixed-voltage systems (對比MP7740DN-LF)
設計說明
The verified supply range is 9.5V to 24V. Confirm the supply tolerance, startup ramp, local decoupling, and any regulator headroom before connecting the amplifier. Keep the high-current output return path short and preserve the recommended ground topology around the 8-SOIC device. Do not infer that a 24V nominal rail is automatically safe if transient overshoot exceeds the manufacturer absolute maximum rating.
Class-D output nodes switch rapidly and can create radiated and conducted emissions. Route the power loop and output filter according to the manufacturer’s recommended layout, keep sensitive audio inputs away from switching nodes, and provide local supply bypassing. Validate the completed PCB with the intended speaker cable, enclosure, supply, and load because EMI performance is system-dependent and the supplied excerpts do not provide filter values or switching frequency.
The part is specified as a 20W Class-D amplifier, but allowable continuous output also depends on supply voltage, load impedance, PCB copper, ambient temperature, and the manufacturer’s thermal limits. Estimate worst-case dissipation in the enclosure, measure the amplifier temperature during maximum playback, and reduce output or improve copper area if the thermal budget is exceeded. The supplied data does not include thermal resistance or derating curves, so those figures must not be inferred from the 20W headline rating.
Do not substitute a similarly named MP7720DS-LF-Z or MP7740DN-LF solely because a comparison page exists. Verify all eight package terminals, supply limits, output topology, load requirements, mute and standby logic, protection behavior, and output-filter requirements against the official datasheet. The verified data confirms the target’s 8-SOIC package and core 20W mono Class-D function, but it does not establish unqualified pin compatibility for any alternative.
合規資訊
The supplied DigChip result identifies the part as RoHS compliant and describes a lead-free plastic package. No verified REACH, AEC-Q100, halogen-free, or conflict-minerals declaration was supplied.